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(Specimens.)

W. C@ GRAY 8v W. TANNAHILL.

CARPET FABRIC.

Patentedzran.' 14, 1890.

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UNITED STATES PATENT OFFICE.

VILLIAM C. GRAY, OF AYR, COUNTY OF AYR, AND WILLIAM TANNAHILL` OF ABERDEEN, COUNTY OF ABERDEEN, SCOTLAND; SAlD TANNAHILL ASSIGNOR` TO SAID GRAY.

CARPET FABRIC.

SPECIFICATION forming part of Letters Patent No. 419,516, dated January 14, 1890. Application 'tiled September 1l, 188.8. Serial No. 285,146. (Specimens.) Patented in England January 20, 188,8, No. 902..Y

To all whom it may concern; Y

Be it known that we, WILLIAM CRAWFORD GRAY, residing in the town and county of Ayr, and WILLIAM TANNAHILL, residing in the city and county of Aberdeen, both in Scotland, and subjects of the Queen of Great Britain and Ireland, have invented certain Improvements in Carpet Fabrics, (for which we have obtained British Letters Patent, No. 902, dated January 20, 1883,) of which the following is a specification.

The object of our invention is to weave a carpet fabric vhaving colored pattern-forming weft-threads, but presenting corded lines, ribs, or ridges, so that the fabric, although differing, essentially, in structure from a Brussels carpet, constitutes an effective imitation of the same. This object we attain in the manner hereinafter set forth, reference being had to the accompanying drawings, in which- Figure 1 is a face view of a piece of carpet fabric made in accordance with our vinvention. Fig. 2 is a transverse sectional view, on a larger scale, of part of the fabric shown in Fig. l, the section being taken on the line l 2 of said figure. Fig. 3 is a longitudinal section, also on an enlarged scale, of` part of the fabric shown in Fig. l, the section being on the line 3 4 of said ligure or on the line 5 6 of Fig. 2; and Fig. 4 is an enlarged longitudinal section of part of the fabric shown in Fig. l, taken on the line 7 8 of said ligure or on the line 9 lO'of Fig. 2.

The fabric comprises a series of weftthreads, thick Warp or stuing threads, and fine Warp or binding threads. There are in the present instance three figure-wefts, (numbered, respectively, 1, 2, and 3,) although but two or more than three may be used, as desired, these Wefts being inserted in any desired order of succession, and each weft where it is to appear on the face being shot above the heavy warp 4, and going to the back of said warp where it is not to appear on the face, so that in the fabric shown lthere are two wefts on theback where the other is on the face. The iine binding-warps 5 form sheds, which cross between successive sets of the figuring-Wefts, as shown in Fig. 4, and

thus serve to bind the face and backwefts together and to the thick Warps 4, and also to prevent the face wefts from lying closely together, so that each line of weft on the face of the fabric forms a Well-defined cord o'r rib, closely resembling that of the transverse row of pile loops in an ordinary Brussels carpet.

The fine binding-warps are located between the thick warps, as shown in Figs. 1 and 2, so that in addition to their duty of binding and separating the face wefts they serve to draw down or depress each face weft between adjoining thick warps; hence the appearance of continuity in each of said face wefts is broken up, the weft being crossed by numerous ine lines or grooves parallel with each other, in order to eifect a simulation of the independent warp-threads of an ordinary Brussels carpet.

In order to add another color to the pattern, the thick Warp 4 may be carried to the face of the fabric for a short distance at intervals, so as to form spots, as shown, the spots formed. by each warp being preferably of limited dimensions, in orderl to avoid an extended oat of the warp on the face of the fabric.

Having thus described our. invention, we claim and desire to secure by Letters Patentl. A carpet fabric in which are combined colored pattern-forming wefts arranged in sets or groups, thick Warps embedded between theface and back wefts, and fine binding-warps to aid in forming' the pattern, substantially as specified.

In testimony whereof I, the said VILLIAM CRAWFORD GRAY, have signed my naine to this speeiieationin thepresence of `two subscribing witnesses.

VILLIAM C. GRAY.

Vitnesses:

W. R; MTI-IOMsON, JOHN Sme, Both of 96 Buchanan Zand. In testimony whereof I, the Said VILLIAM TANNAHILL, have signed my name to this specification in the presence of two subscribing; witnesses.

WVM. TANNAIIILL.

Street, Glasgow, Scot- Witnesses:

GEORGE SrENcE, JOHN B. FAIRWEATI-mn, "Both of 214i Uli/ion, Street, Aberdeen. 

